救援人员向西维吉尼亚州星期一发生爆炸的矿井内钻了第一个通风孔，但没有听到四名失踪矿工的生还迹象。星期一的爆炸事件导致25人丧生。
Rescue workers have drilled the first hole into a West Virginia coal mine where an explosion Monday killed 25 people, but heard no signs of life from the four miners still missing.
下古生界储层主要由晶间孔、溶孔和裂缝组成。
The Lower Paleozoic reservoir mainly by corrosion pore, intercrystalline pore and the crack are composed.
粘固剂中的互连大孔可以实现血管形成、生长因子夹带、细胞移生和组织向内生长。
The interconnected macroporosity in the cement allows for vascularization, entrapment of growth factors, cell colonization and tissue ingrowth.
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